Study the reaction scheme: aqueous CuSO₄ reacts with metal X to give iron(II) sulphate and brown solid Z; with solution Y it gives copper(II) hydroxide, which dissolves in excess Y to give a dark blue solution. Iron(II) sulphate with aqueous sodium hydroxide gives green precipitate P, which is oxidised to iron(III) hydroxide.

1. aIdentify metal X. [1]
2. bIdentify solution Y. [1]
3. cIdentify green precipitate P. [1]
4. dIdentify brown solid Z. [1]
5. eName the type of reaction which occurs between metal X and aqueous copper(II) sulphate. [1]
6. fWhat is the colour of iron(III) hydroxide? [1]
7. gName the products formed when iron(III) hydroxide is heated. [2]
8. hAcidified potassium manganate(VII), KMnO₄, was used to oxidise the green precipitate P to iron(III) hydroxide. State the colour change of the potassium manganate(VII). [1]
9. iWhat happens to the oxidation state of iron during the oxidation? [1]

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